334189 - Blanking Grommet, Gearbox Tunnel, 4-cylinder models only Land-Rover Series 2/2a and 3 £7.50 Quantity: at £7.50 each Out of Stock Out of stock. Blanking Grommet, Gearbox Tunnel, 4-cylinder models only Very large blanking grommet that fits in the side of the gearbox tunnel. Also fitted to the top rear of the gearbox tunnel on early Series 2 and 2a models with gearboxes with oil filler cap. 2 grommets are pictured to show both sides. For 6-cylinder models, use 345140.